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Finite time correction function projection synchronization and parameter modulation control method

A technology of correction function and limited time, applied in the direction of digital transmission system, electrical components, transmission system, etc., can solve the problem of slow synchronization response speed, and achieve the effect of enhanced security, good confidentiality performance, and fast synchronization.

Active Publication Date: 2021-10-22
XINJIANG UNIVERSITY
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Problems solved by technology

[0004] The purpose of the present invention is to provide a control method for finite time correction function projection synchronization and parameter modulation to solve the problem of slow synchronization response speed in existing systems

Method used

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  • Finite time correction function projection synchronization and parameter modulation control method

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specific Embodiment

[0120] see Figure 1-2 As shown, the present invention is based on a chaotic system synchronization method based on fractional order finite time correction function projection synchronization and parameter regulation and control. The principle diagram of the parameter modulation method is attached figure 1 As shown, the principle diagram of the secure communication based on the finite time correction function projection synchronization and parameter modulation of the fractional order system of the present invention is attached figure 2 As shown, the specific steps are as follows:

[0121] Take system order α=0.95; time factor β=0.78; system parameter η 1 =4, η 3 =64; function scaling factor a 1 (t), a 2 (t), a 3 (t) are respectively a 1 (t)=2+0.1sin 2 (t); a 2 (t)=-1+0.1 sin(t); a 3 (t)=-1+0.01sin(t), then:

[0122] Step 1, the mathematical model of the fractional laser Maxwell-Bloch system is specifically:

[0123]

[0124]

[0125]

[0126] Among them, η...

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Abstract

The invention discloses a finite time correction function projection synchronization and parameter modulation control method, and relates to the technical field of chaotic secret communication. A strategy of combining finite time control and correction function projection synchronous control is adopted, and the method comprises the following steps: taking a fractional order laser Maxwell-Bloch chaotic system serves as a driving system, and conducting nonlinear dynamic behavior analysis on the system in combination with a time sequence diagram, a space phase diagram, a bifurcation diagram and the like; designing a synchronous controller of the driving system and the response system; and analyzing the performance and the stability of the finite time correction function projection synchronous controller. The correctness of the control method is verified through numerical simulation, synchronization of the two systems can be achieved in a short time, and the method has high robustness and is more suitable for being applied to actual secret communication.

Description

technical field [0001] The invention belongs to the technical field of chaos security communication, and in particular relates to a control method for projection synchronization and parameter modulation of a finite time correction function. Background technique [0002] Since the realization of chaotic synchronization, the chaotic signal is very suitable as a carrier of secure communication due to its non-periodic, continuous bandwidth spectrum, noise-like, initial value sensitivity, extremely complex trajectory and unpredictability. The discovery of chaos synchronization phenomenon has laid a foundation for the application research of chaos in the communication neighborhood. The application of chaos synchronization to chaos secure communication mainly includes three technologies: one is to construct a chaotic system; the other is to design a suitable chaos synchronization controller; the third is to Encryption and decryption of transmitted signals. As long as these are han...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00
CPCH04L9/001Y02P90/02
Inventor 张宏立张云王聪马萍
Owner XINJIANG UNIVERSITY
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